CentOS: Set CD-ROM as yum source

1 mount CD-ROM

mkdir /media/centos

mount –t auto /dev/cdrom /media/centos

2 config the yum source 2.1 backup the default yum config file

mv  /etc/yum.repos.d/CentOS-Base.repo  /etc/yum.repos.d/CentOS-Base.repo.bak

2.2 edit /etc/yum.repos.d/CentOS-Media.repo

[c6-media]
name=CentOS-$releasever - Media
baseurl=file:///media/centos/  
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6